diff options
| -rw-r--r-- | arch/arm/kernel/setup.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 9fc483393ba..e0430d036ce 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -246,11 +246,12 @@ static int cpu_has_aliasing_icache(unsigned int arch) /* arch specifies the register format */ switch (arch) { case CPU_ARCH_ARMv7: - asm("mcr p15, 2, %1, c0, c0, 0 @ set CSSELR\n" - "isb\n" - "mrc p15, 1, %0, c0, c0, 0 @ read CCSIDR" - : "=r" (id_reg) + asm("mcr p15, 2, %0, c0, c0, 0 @ set CSSELR" + : /* No output operands */ : "r" (1)); + isb(); + asm("mrc p15, 1, %0, c0, c0, 0 @ read CCSIDR" + : "=r" (id_reg)); line_size = 4 << ((id_reg & 0x7) + 2); num_sets = ((id_reg >> 13) & 0x7fff) + 1; aliasing_icache = (line_size * num_sets) > PAGE_SIZE; |